CN222347160U - Vehicle body rear structure and vehicle with same - Google Patents

Abstract

The utility model discloses a vehicle body rear structure and a vehicle with the same, wherein the vehicle body rear structure comprises a rear floor annular beam, a rear floor annular beam and a rear floor annular beam, wherein the rear floor annular beam is integrally formed and comprises two rear longitudinal beams, and the two rear longitudinal beams extend forwards and backwards and are arranged at intervals left and right; the two rear longitudinal beam rear sections are respectively provided with a first connecting part, the two rear longitudinal beam rear sections are respectively connected to the rear ends of the two rear longitudinal beams through the first connecting parts, the rear longitudinal beam rear sections are provided with crumple guide areas, the crumple guide areas are arranged on the rear sides of the first connecting parts, the first rear floor body is arranged on the rear sides of the rear floor annular beams and fixedly connected between the two rear longitudinal beam rear sections, and the first rear floor body is provided with an installation area for installing IPS. According to the vehicle body rear structure, the crushing deformation of the vehicle body structure can be reduced, the living space and safety of a rear collision passenger can be improved, the collision and extrusion force received by the IPS can be reduced, and the risk of damage and fire of the IPS can be reduced.

Description

Vehicle body rear structure and vehicle with same

Technical Field

The utility model relates to the technical field of vehicles, in particular to a vehicle body rear structure and a vehicle with the same.

Background

In the automobile rear collision test, the deformation of the rear area of the whole automobile is severe. An intelligent power system module (IPS) is usually arranged in the rear area of a new energy automobile, the IPS module is extremely easy to be impacted severely in automobile back collision test, and the problem that the IPS module is damaged under a back collision working condition so as to generate high-voltage short circuit fire is solved, so that the intelligent power system module is a great technical pain and difficulty in the current industry.

Disclosure of utility model

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model aims to provide the vehicle body rear structure which can reduce the crushing deformation of the vehicle body structure, improve the living space of a rear collision passenger and the safety, reduce the collision and extrusion force received by the IPS, reduce the risk of damage and fire of the IPS and reduce the risk of fire after the collision of the vehicle.

The rear structure of the vehicle body comprises a rear floor annular beam, a first rear floor body and a first rear floor body, wherein the rear floor annular beam is integrally formed and comprises two rear longitudinal beams, the two rear longitudinal beams extend forwards and backwards and are arranged at intervals left and right, the rear sections of the two rear longitudinal beams are respectively provided with a first connecting part, the rear sections of the two rear longitudinal beams are respectively connected to the rear ends of the two rear longitudinal beams through the first connecting parts, the rear sections of the rear longitudinal beams are provided with a crumple guiding area, the crumple guiding area is arranged at the rear side of the first connecting parts, the first rear floor body is arranged at the rear side of the rear floor annular beam and is fixedly connected between the rear sections of the two rear longitudinal beams, and the first rear floor body is provided with an installation area for installing an IPS.

According to the vehicle body rear structure, the crumple guide zone is arranged at the rear section of the rear longitudinal beam, so that the first rear floor body can be prevented from directly striking the front compartment, the crumple deformation of the vehicle body structure can be reduced, the survival space of a rear collision passenger is improved, and the safety is improved.

According to some embodiments of the utility model, the crush guide is formed on an upper surface of the rear side rail rear section, and the crush guide is formed with a crush groove recessed downward or a first crush hole penetrating the upper surface in an up-down direction, the crush groove or the first crush hole extending left and right and penetrating left and right sides of the rear side rail rear section.

According to some embodiments of the utility model, the vehicle body rear structure further comprises a mounting bracket for mounting the IPS, a second crush hole is formed in the mounting bracket and/or the mounting area, and a fastener passes through the second crush hole to fix the mounting bracket to the first rear floor body.

According to some embodiments of the utility model, the second crush hole has a mounting portion formed in a circular shape and a crush portion extending back and forth and in communication with the mounting portion, the crush portion having a width dimension less than a diameter of the mounting portion.

According to some embodiments of the utility model, the rear floor annular beam comprises a rear floor middle beam and a rear floor rear cross beam, wherein the rear floor middle beam and the rear floor rear cross beam extend along the left-right direction, the left-right ends of the rear floor middle beam and the rear floor rear cross beam are respectively connected with two rear longitudinal beams, the rear floor middle beam and the rear floor rear cross beam are sequentially and alternately arranged along the front-back direction of a vehicle, the first rear floor body is fixedly connected with the rear floor rear cross beam, the vehicle body rear structure further comprises a plurality of first reinforcing pieces, the plurality of first reinforcing pieces extend along the front-back direction and are alternately arranged on the lower surface of the first rear floor body along the left-right direction, and one ends of the plurality of first reinforcing pieces are fixedly connected with the rear floor rear cross beam.

According to some embodiments of the utility model, the vehicle body rear structure further comprises a second rear floor body fixedly connected between the rear floor front cross beam and the rear floor middle beam, and a plurality of second reinforcing pieces extending in the front-rear direction and arranged on the lower surface of the second rear floor body at intervals in the left-right direction, wherein two ends of each of the plurality of second reinforcing pieces are fixedly connected with the rear floor rear cross beam and the rear floor middle beam respectively.

According to some embodiments of the utility model, the vehicle body rear structure further comprises two rear wheel covers fixedly connected to the left side and the right side of the rear floor annular beam respectively, and rear wheel cover reinforcing plates extending up and down, wherein one ends of the rear wheel cover reinforcing plates are fixedly connected with the rear floor annular beam, the other ends of the rear wheel cover reinforcing plates are fixedly connected with the rear wheel covers, each rear wheel cover is at least connected with one rear wheel cover reinforcing plate, and a plurality of rear wheel cover reinforcing plates are arranged at intervals along the front-rear direction.

According to some embodiments of the utility model, the vehicle body rear structure further comprises a rear anti-collision beam, an energy absorption box and an energy absorption box, wherein the rear anti-collision beam extends leftwards and rightwards, one end of the rear anti-collision beam is connected with the rear end of the rear section of one rear longitudinal beam, the other end of the rear anti-collision beam is connected with the rear end of the rear section of the other rear longitudinal beam, and the energy absorption box is connected between the rear end of the rear section of the rear longitudinal beam and the rear anti-collision beam.

According to some embodiments of the utility model, the rear section of the rear longitudinal beam is formed into a frame structure extending front and back and having a cross section in a Chinese character 'ri'.

A vehicle according to a second aspect of the utility model includes an IPS and a vehicle body rear structure according to the first aspect of the utility model.

According to the vehicle of the present utility model, by providing the box body rear structure of the first aspect described above, the overall performance of the vehicle is improved.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

Fig. 1 is a schematic view of a vehicle body rear structure according to an embodiment of the utility model;

Fig. 2 is a schematic view of another angle of the vehicle body rear structure according to the embodiment of the utility model;

FIG. 3 is a schematic view of still another angle of a vehicle body rear structure according to an embodiment of the utility model;

FIG. 4 is a schematic view of the rear section of the rear rail shown in FIG. 1;

FIG. 5 is a partial schematic view of the rear floor ring beam shown in FIG. 2;

FIG. 6 is a schematic view of a second crush hole.

Reference numerals:

100. A vehicle body rear structure;

10. The rear floor comprises a rear floor annular beam, a rear floor front beam, a rear floor middle beam, a rear floor rear beam, a rear longitudinal beam and a rear floor annular beam, wherein the rear floor annular beam comprises a rear floor annular beam and a rear floor annular beam;

20. Rear section of rear longitudinal beam; 21, first connection portion 22, collapsing guide area;

30. 31, second crumple holes, 311, a mounting part, 312, a crumple part;

41. A second rear floor body 42, a third rear floor body;

51. 52, a second reinforcement;

60. 70, a rear anti-collision beam and an energy absorption box.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

A vehicle body rear structure 100 according to an embodiment of the first aspect of the utility model is described below with reference to fig. 1 to 6.

As shown in fig. 1 to 2, the vehicle body rear structure 100 according to the embodiment of the utility model includes a rear floor annular beam 10, two rear longitudinal beam rear sections 20, and a first rear floor body 30, wherein the rear floor annular beam 10 is integrally formed, so that the difficulty in assembling the vehicle body rear structure 100 can be reduced, and the convenience in producing the vehicle body rear structure 100 can be improved, and simultaneously, the number of parts and welding spots required by the vehicle body rear structure 100 can be reduced, the risk of stress cracking of the vehicle body rear structure 100 can be reduced, and the overall quality of the vehicle body rear structure 100 can be improved.

Specifically, the rear floor annular beam 10 includes two rear side members 14 extending back and forth and arranged at a left-right interval, wherein the rear side members 14 are important components of a vehicle body frame structure, provide main bearing capacity of the rear part of the vehicle, support the vehicle body and interior trim parts, and are connected with other components such as a rear suspension system, a rear axle and the like to jointly maintain the overall rigidity and stability of the vehicle, and meanwhile, the rear side members 14 can absorb and disperse impact force through self collapsing deformation during rear collision so as to reduce energy transmitted to the interior of a vehicle cabin, thereby protecting the passenger cabin from being damaged and reducing the risk of injury of passengers.

The two rear longitudinal beam rear sections 20 are respectively provided with a first connecting part 21, the two rear longitudinal beam rear sections 20 are respectively connected to the rear ends of the two rear longitudinal beams 14 through the first connecting parts 21, the rear longitudinal beam rear sections 20 are provided with a crumple guide zone 22, the crumple guide zone 22 is arranged at the rear side of the first connecting parts 21, the first rear floor body 30 is arranged at the rear side of the rear floor annular beam 10 and is fixedly connected between the two rear longitudinal beam rear sections 20, and the first rear floor body 30 is provided with an installation zone for installing an IPS (INTELLIGENT POWER SYSTEM/intelligent power system module).

The first rear floor body 30 is a floor at a trunk position of the vehicle, and mainly plays a bearing role. The rear sections 20 of the two rear longitudinal beams are connected to the rear ends of the two rear longitudinal beams 14 and to the left and right sides of the first rear floor body 30, so that the first rear floor body 30 can be fixedly supported, meanwhile, the rear sections 20 of the two rear longitudinal beams are closer to the tail of the vehicle than the rear longitudinal beams 14, when the vehicle bumps backwards, firstly, crumple energy absorption occurs at the rear sections 20 of the two rear longitudinal beams, therefore, the collision energy transmitted to the rear floor annular beam 10 can be reduced, the risk of breakage and damage of the rear floor annular beam 10 can be reduced, and the maintenance economy of the vehicle can be improved.

It should be noted that, when the crush guide area 22 receives a force, the crush guide area 22 may deform in a preset manner, so that when the vehicle encounters a rear collision, the rear section 20 of the rear longitudinal beam may deform in a preset manner, so that the first rear floor body 30 may be driven to deform in a preset manner, to prevent the first rear floor body 30 from directly striking the front compartment, so as to reduce the crush deformation of the vehicle body structure, improve the living space of the rear collision passenger and improve the safety, and in addition, the first rear floor body 30 is further provided with an IPS, so that the crush guide area 22 may also prevent the IPS from directly colliding and extruding with the front compartment, so as to reduce the collision and extrusion force suffered by the IPS, and reduce the risk of the IPS from damaging and firing.

According to the vehicle body rear part structure 100 provided by the embodiment of the utility model, the crumple guide zone 22 is arranged at the rear section 20 of the rear longitudinal beam, so that the first rear floor body 30 can be prevented from directly striking against the front compartment, the crumple deformation of the vehicle body structure can be reduced, the survival space of a rear collision passenger is improved, and the safety is improved, meanwhile, the IPS can be prevented from directly colliding and extruding with the front compartment, the collision and extrusion force suffered by the IPS can be further reduced, the damage fire risk of the IPS is reduced, and the risk of the rear collision fire of the vehicle is reduced.

According to some embodiments of the present utility model, as shown in fig. 4, a crush guide 22 is formed on the upper surface of the rear side rail rear section 20, and the crush guide 22 is formed with a crush groove recessed downward or a first crush hole penetrating the upper surface in the up-down direction, the crush groove or the first crush hole extending left and right and penetrating both left and right sides of the rear side rail rear section 20. It will be appreciated that crush guide 22 may be formed with a downwardly concave crush slot or with a first crush hole extending through the upper surface in the up-down direction. The crush slots or the first crush holes can provide deformation space for deformation of the rear section 20 of the rear longitudinal beam, meanwhile, the crush guide areas 22 are formed on the upper surface of the rear section 20 of the rear longitudinal beam, extend leftwards and rightwards and penetrate through the left side and the right side of the rear section 20 of the rear longitudinal beam, can limit the deformation direction of the rear section 20 of the rear longitudinal beam, enable the rear section 20 of the rear longitudinal beam to bend upwards along the crush slots or the first crush holes to deform when external force is applied, and further enable an IPS arranged above the first rear floor body 30 to turn upwards to move forwards in an in-plane extruded gesture, so that collision/extrusion force applied to the IPS is reduced, and probability of damage and fire of the IPS is reduced.

According to some embodiments of the present utility model, the vehicle body rear structure 100 further includes a mounting bracket for mounting the IPS, the mounting bracket and/or the mounting area having a second crush hole 31 formed therein, and a fastener passing through the second crush hole 31 to secure the mounting bracket to the first rear floor body 30. It is understood that the second crush holes 31 may be formed only in the mounting bracket, the second crush holes 31 may be formed only in the mounting region of the first rear floor body 30, and the second crush holes 31 may be formed in both the mounting bracket and the mounting region. It is understood that the second crumple holes 31 are mounting holes capable of crumple, so that when the vehicle collides with the rear surface, the mounting bracket can displace relative to the first rear floor by the second crumple holes 31, thereby reducing transient impact load applied by the IPS and further reducing collision short circuit and fire risk of the IPS.

According to some embodiments of the present utility model, as shown in fig. 6, the second crush hole 31 has a mounting portion 311 and a crush portion 312, the mounting portion 311 is formed in a circular shape, the crush portion 312 extends back and forth and communicates with the mounting portion 311, and a width dimension of the crush portion 312 is smaller than a diameter of the mounting portion 311. The mounting portion 311 is used for mounting and fixing a fastener of the mounting bracket and the first rear floor body 30, and the crumple portion 312 is mainly used for providing a space for the rear movement of the fastener, so that when the vehicle collides with the rear surface of the vehicle, the mounting bracket can displace relative to the first rear floor, thereby reducing transient impact load received by the IPS and further reducing collision short circuit and fire risk of the IPS. In addition, the width dimension of the crumple 312 is smaller than the diameter of the mounting portion 311, so that the mounting stability of the mounting bracket and the first rear floor can be ensured, and the use safety of the IPS can be ensured.

According to some embodiments of the present utility model, as shown in fig. 1 to 3, the rear floor ring beam 10 includes a rear floor center beam 12 and a rear floor rear cross beam 13, the rear floor center beam 12 and the rear floor rear cross beam 13 extending in a left-right direction and both left-right ends being respectively connected to two rear side members 14, the rear floor center beam 12 and the rear floor rear cross beam 13 being sequentially spaced apart in a front-to-rear direction of the vehicle. It is understood that the rear floor center sill 12 and the rear floor rear cross member 13 can increase the supporting strength of the rear side member 14 in the left-right direction, whereby the rear floor center sill 12 and the rear floor rear cross member 13 can avoid the problem that the rear side member 14 is deformed and unstable due to the impact force when the vehicle is subjected to a rear collision.

The first rear floor body 30 is fixedly connected with the rear floor rear cross member 13, and the vehicle body rear structure 100 further includes a plurality of first reinforcing members 51 extending in the front-rear direction and being spaced apart from the lower surface of the first rear floor body 30 in the left-right direction, one end of the plurality of first reinforcing members 51 being fixedly connected with the rear floor rear cross member 13. The first reinforcing members 51 may increase the structural strength of the first rear floor body 30, so as to improve the bearing capacity of the first rear floor body 30, and the first rear floor body 30 is disposed at the rear of the rear floor rear cross member 13, so that the first rear floor body 30 may first receive the collision force when the vehicle collides, thereby increasing the impact resistance of the first rear floor body 30, and the first reinforcing members 51 are fixedly connected with the rear floor rear cross member 13, so that the first reinforcing members 51 may also transmit the collision force transmitted to the first rear floor body 30 to the rear floor rear cross member 13, so as to transmit the collision force to the rear of the whole vehicle body through the rear floor ring beam 10, thereby improving the dispersion of the collision force and reducing the overall crush deformation of the rear structure of the vehicle.

For example, the number of the first reinforcing members 51 may be two, three, or more.

According to some embodiments of the present utility model, as shown in fig. 1 to 3, the vehicle body rear structure 100 further includes a second rear floor body 41 and a plurality of second reinforcement members 52, wherein the second rear floor body 41 is fixedly coupled between the rear floor front cross member 11 and the rear floor center sill 12, mainly for mounting rear seats.

A plurality of second reinforcing members 52 extend in the front-rear direction and are arranged at intervals in the left-right direction on the lower surface of the second rear floor body 41, and both ends of the plurality of second reinforcing members 52 are fixedly connected with the rear floor rear cross member 13 and the rear floor center sill 12, respectively. On the one hand, the plurality of second reinforcing members 52 are arranged on the lower surface of the second rear floor body 41, so that the structural strength of the second rear floor body 41 can be increased, and the installation stability of the rear seat can be improved, on the other hand, the plurality of second reinforcing members 52 are fixedly connected with the rear floor rear cross beam 13 and the rear floor middle beam 12 respectively, so that the plurality of second reinforcing members 52 can support the rear floor rear cross beam 13 and the rear floor middle beam 12 in the front-rear direction, the deformation of the rear floor rear cross beam 13 and the rear floor middle beam 12 due to the acting force in the left-right direction can be effectively reduced, the structural strength of the vehicle body rear structure 100 can be further improved, and meanwhile, the plurality of second reinforcing members 52 can also transmit the collision force transmitted to the rear floor rear cross beam 13 to the rear floor middle beam 12, so that the collision force can be further dispersed, the deformation amount of the vehicle body rear structure 100 can be further reduced, the influence of the collision force on the passenger cabin can be reduced, and the safety performance of the vehicle can be improved.

For example, the number of the second reinforcing members 52 may be two, three, or more.

Referring to fig. 3, the number of the first reinforcing members 51 is three, the first reinforcing members 51a, 51b and 51c extend in the front-rear direction and are arranged at intervals in the left-right direction, the number of the second reinforcing members 52 is two, and the second reinforcing members 52a and 52b extend in the front-rear direction and are arranged at intervals in the left-right direction. Thus, when a vehicle collides with the rear, the collision force can be transmitted through five transmission paths, two paths being transmitted along the rear side member rear section 20 to the rear side member 14, the third path being transmitted along the first reinforcement 51a toward the rear floor rear cross member 13, then transmitted through the rear floor rear cross member 13 to the rear side member 14 and the second reinforcement 52a, and then transmitted to the entire vehicle body rear structure 100, the fourth path being transmitted along the first reinforcement 51b toward the rear floor rear cross member 13, then transmitted through the rear floor rear cross member 13 to the rear side member 14 and the second reinforcement 52a and the second reinforcement 52b, and then transmitted to the entire vehicle body rear structure 100, and the fifth path being transmitted along the first reinforcement 51c toward the rear floor rear cross member 13, then transmitted through the rear floor rear cross member 13 to the rear side member 14 and the second reinforcement 52b, and then transmitted to the entire vehicle body rear structure 100. The stress at the connection position of the rear longitudinal beam rear section 20 and the rear floor annular beam 10 can be greatly reduced by multiple paths, so that the risk of local fracture damage of the rear longitudinal beam rear section 20 and/or the rear floor annular beam 10 can be reduced, and the maintenance economy of the automobile can be improved.

Further, as shown in FIG. 3, for example, the vehicle body rear structure 100 further includes a third rear floor body 42 and a rear floor front cross member 11, wherein the rear floor front cross member 11 extends left and right and both ends are fixedly connected with the front ends of the two rear side members 14, and the third rear floor body 42 is disposed between the rear floor front cross member 11 and the rear floor center member 12 for mounting the center seat.

According to some embodiments of the present utility model, the vehicle body rear structure 100 further includes two rear wheel covers fixedly connected to the left and right sides of the rear floor annular beam 10, respectively, and rear wheel cover reinforcing plates extending up and down, one end of each rear wheel cover reinforcing plate being fixedly connected to the rear floor annular beam 10, the other end of each rear wheel cover reinforcing plate being fixedly connected to the rear wheel cover, each rear wheel cover being connected to at least one rear wheel cover reinforcing plate, the plurality of rear wheel cover reinforcing plates being arranged at intervals in the front-rear direction.

The number of the rear wheel cover reinforcing plates may be one or more, for example, one, two, three or more. Specifically, one end of the rear wheel cover reinforcing plate is connected with the rear floor annular beam 10, and the other end is fixedly connected with the rear wheel cover, so that the connection rigidity between the rear wheel cover and the main body structure can be increased, and the local strength of the rear part of the vehicle body, especially near the wheels, can be improved.

According to some embodiments of the present utility model, as shown in FIGS. 1-3, the rear body structure 100 further includes a rear impact beam 60 and a crash box 70. Specifically, the rear bumper beam 60 extends left and right, one end of the rear bumper beam 60 is connected with the rear end of the rear section 20 of a rear longitudinal beam, and the other end of the rear bumper beam 60 is connected with the rear end of the rear section 20 of another rear longitudinal beam, wherein the rear bumper beam 60 is arranged at the rear end of the rear section 20 of the rear longitudinal beam and is a device for bearing rear impact force for the first time on a vehicle body, and when the vehicle collides with the rear part, the rear bumper beam 60 contacts and absorbs the impact force at first, so that direct impact on the rear structure of the vehicle can be reduced, impact force transmitted to the rear part of the vehicle is reduced, and the safety of a passenger cabin can be improved.

The crash box 70 is connected between the rear end of the rear rail rear section 20 and the rear impact beam 60. The energy absorption box 70 is mainly used for collapsing and absorbing energy, and reduces the impact force transmitted to the rear section 20 of the rear longitudinal beam, so that the damage of the collision to the rear section 20 of the rear longitudinal beam can be reduced, the impact force transmitted to the inside of a carriage is effectively reduced, the safety of passengers in the vehicle is protected, and the damage degree of the vehicle is reduced.

When a rear collision occurs to a vehicle, the rear impact beam 60 first contacts and absorbs impact force, and then transfers energy which cannot be absorbed to the energy-absorbing box 70, and the energy-absorbing box 70 secondarily absorbs and disperses collision energy, and then transfers the collision energy to the rear floor annular beam 10 and the rear part of the whole vehicle body through the rear longitudinal beam rear section 20, thereby effectively dispersing impact received during the collision of the vehicle, thereby reducing the damage degree of the vehicle and improving the maintenance economy of the vehicle.

According to some embodiments of the present utility model, as shown in fig. 4, the rear side member rear section 20 is formed as a frame structure extending front and rear and having a cross section of a zigzag shape. The solar-shaped frame structure can remarkably improve bending resistance, torsion resistance and shearing resistance of the rear longitudinal beam rear section 20 in the longitudinal direction and the transverse direction, so that the overall structural strength of the rear longitudinal beam rear section 20 can be improved, the collision resistance of a vehicle is improved, in addition, the solar-shaped frame structure can be understood that a cavity is formed in the rear longitudinal beam rear section 20, the overall weight of the rear longitudinal beam rear section 20 can be reduced, the lightweight design of the vehicle is facilitated, meanwhile, the cavity can also serve as an energy absorption cavity, when collision energy is transmitted to the rear longitudinal beam rear section 20, the rear longitudinal beam rear section 20 can collapse, collision energy transmitted to the rear floor annular beam 10 and the rear floor can be reduced, the extrusion force of the vehicle body rear structure 100 to a passenger cabin can be protected, and the safety of a passenger is improved.

A vehicle according to an embodiment of the second aspect of the utility model includes an IPS and a vehicle body rear structure 100 according to an embodiment of the first aspect of the utility model.

According to the vehicle of the embodiment of the utility model, by providing the box body rear structure 100 of the above-described first aspect embodiment, the overall performance of the vehicle is improved.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, or in communication, directly connected, or indirectly connected via an intervening medium, or in communication between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.

Claims (10)

1. A vehicle body rear structure, characterized by comprising:

The rear floor annular beam is integrally formed and comprises two rear longitudinal beams, wherein the two rear longitudinal beams extend forwards and backwards and are arranged at intervals left and right;

The two rear longitudinal beam rear sections are respectively provided with a first connecting part, the two rear longitudinal beam rear sections are respectively connected with the rear ends of the two rear longitudinal beams through the first connecting parts, the rear longitudinal beam rear sections are provided with a crumple guide zone, and the crumple guide zone is arranged at the rear side of the first connecting parts;

The first back floor body, the first back floor body sets up the rear side of back floor ring beam, and fixed connection is in two between the back longeron rear segment, have the installation zone that is used for installing IPS on the first back floor body.

2. The vehicle body rear structure according to claim 1, wherein the crush guide region is formed on an upper surface of the rear side member rear section, the crush guide region being formed with a crush groove recessed downward or a first crush hole penetrating the upper surface in an up-down direction, the crush groove or the first crush hole extending right-left and penetrating right sides of the rear side member rear section.

3. The vehicle body rear structure according to claim 1, further comprising a mounting bracket for mounting the IPS, a second crush hole being formed in the mounting bracket and/or the mounting area, a fastener passing through the second crush hole to fix the mounting bracket to the first rear floor body.

4. A vehicle body rear structure according to claim 3, wherein the second crush hole has a mounting portion formed in a circular shape and a crush portion extending back and forth and communicating with the mounting portion, the crush portion having a width dimension smaller than a diameter of the mounting portion.

5. The vehicle body rear structure according to claim 1, wherein the rear floor annular beam includes a rear floor center beam and a rear floor rear cross beam extending in a left-right direction and having left and right ends respectively connected to the two rear side members, the rear floor center beam and the rear floor rear cross beam being sequentially spaced apart in a vehicle front-to-rear direction,

The first rear floor body is fixedly connected with the rear floor rear cross beam, the vehicle body rear structure further comprises a plurality of first reinforcing pieces, the plurality of first reinforcing pieces extend along the front-rear direction and are arranged on the lower surface of the first rear floor body at intervals along the left-right direction, and one ends of the plurality of first reinforcing pieces are fixedly connected with the rear floor rear cross beam.

6. The vehicle body rear structure according to claim 5, characterized by further comprising:

The second rear floor body is fixedly connected between the rear floor front cross beam and the rear floor middle beam;

The second reinforcing pieces extend in the front-back direction and are arranged on the lower surface of the second rear floor body at intervals in the left-right direction, and two ends of the second reinforcing pieces are fixedly connected with the rear floor rear cross beam and the rear floor middle beam respectively.

7. The vehicle body rear structure according to claim 1, characterized by further comprising:

the two rear wheel covers are respectively and fixedly connected to the left side and the right side of the rear floor annular beam;

The rear wheel cover reinforcing plate, the rear wheel cover reinforcing plate extends from top to bottom, the one end of rear wheel cover reinforcing plate with the annular roof beam fixed connection in rear floor, the other end of rear wheel cover reinforcing plate with rear wheel cover fixed connection, every rear wheel cover is connected with at least one rear wheel cover reinforcing plate, a plurality of rear wheel cover reinforcing plates follow fore-and-aft direction interval arrangement.

8. The vehicle body rear structure according to claim 1, characterized by further comprising:

The rear anti-collision beam extends leftwards and rightwards, one end of the rear anti-collision beam is connected with the rear end of the rear section of one rear longitudinal beam, and the other end of the rear anti-collision beam is connected with the rear end of the rear section of the other rear longitudinal beam;

The energy-absorbing box is connected between the rear end of the rear section of the rear longitudinal beam and the rear anti-collision beam.

9. The vehicle body rear structure according to claim 1, wherein the rear side member rear section is formed as a frame structure extending front-to-rear and having a cross section in a zigzag shape.

10. A vehicle characterized by comprising an IPS and the vehicle body rear structure according to any one of claims 1 to 9.